Posted by: Betty on: April 9, 2013
Loss of three or more consecutive pregnancies usually before 20th week of gestation is known as recurrent miscarriage. Or in general, if a woman encounters two or more miscarriages in a row, it is termed as recurrent miscarriage. Recurrent miscarriage causes are slightly different from usual miscarriage causes. According to American society for reproductive medicine only one percent of the women in the world are having recurrent miscarriages. There are some obvious recurrent miscarriage causes but in some cases, it becomes difficult to determine the cause of miscarriages.
One of recurrent miscarriage causes is chromosomal defect or genetic defect. This cause is responsible for approximately 70% of the miscarriages. Chromosomal defects and abnormalities are present in most of the females after 35 years of age. In some miscarriages, chromosomal defect is a random cause and does not occur in the next pregnancy. This abnormality is not inherited from the father or mother; however, it is the major cause of miscarriage amongst others. Only about 5% of the couples have been diagnosed with the inherited genetic defects which result in chromosomal abnormality.
Age plays a pivotal role in recurrent miscarriages and is considered as one of the important recurrent miscarriage causes. The chances of miscarriage among women before the age of thirty five are 10 to 20%. Women over the age of thirty-five years have the highest chances of miscarriages. When reaching to the age of forty, the risk of recurrent miscarriages gets further higher. More than 33% of women face miscarriages due to the age factor. Age is also one of the main reason of miscarriage causes during first trimester.
Anatomical Anomaly of Uterus:
Out of so many recurrent miscarriage causes, abnormal uterus is one of them. More than 15% of repeated miscarriages are due to abnormal shaped uterus. There are few women with double uterus and other developmental abnormalities of uterus that results in complications during pregnancy. Moreover, the scar tissues on the uterus also cause this problem. Some of the problems associated with abnormal uterus are improper impanation, inadequate supply of blood to the uterus or insufficient space for the fetus to grow.
Some other recurrent miscarriage causes are:
Incompetent cervix: mostly results in second trimester miscarriage and also causes premature labor pain. In case of weak cervix, a surgery known as cerclage is required in which a surgical stitch is made across the cervix to prevent premature dilatation.
Polycystic ovarian syndrome is another cause behind repeated miscarriages. Women suffering from this problem have higher level of male hormones in their blood. It can cause infertility as well as recurrent miscarriages. The polycystic ovarian syndrome can be treated through insulin sensitizing medication.
In addition to all the above mentioned recurrent miscarriage causes, there are few patients in which it is not possible to find the reason behind the recurrent miscarriages. 50% of the couples do not get a cause detected even after detailed inspection and testing. It is termed as unknown recurrent miscarriage causes but 70% of such couples have a successful pregnancy even after that.